<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>课后轻松学管理员界面</title>
  <!-- 引入样式 -->
  <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
</head>

<body>
  <script src="https://cdn.bootcss.com/vue/2.5.2/vue.min.js"></script>
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  <script src="https://unpkg.com/element-ui/lib/index.js"></script>
  <script src="https://cdn.bootcss.com/echarts/3.8.5/echarts.min.js"></script>
  <div id="app"></div>
  <!-- built files will be auto injected -->
</body>

</html>